var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var expressLayouts = require('express-ejs-layouts');
var session = require('express-session');


// mongodb
db = require('./conf/db');
LOG = require('./conf/log');


// 错误提示js
Main = require('./componets/Main');

var routes = require('./routes/index');
var users = require('./routes/users');




var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.set('layout', 'colum1');

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));

app.use(expressLayouts);
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));


//session

app.use(session({
  cookie: { httpOnly: true, maxAge: 1000*60*60*10 },
  secret: 'keyboard cat',
  resave: false,
  saveUninitialized: true
}));


// 全局变量
app.use(function (req, res, next) {
  //req.query.page = req.query.page || 1;
  //req.query.size = req.query.size || 10;
  //res.locals.user = req.session.user || {};
  res.locals.user = {email:''};
  res.locals.title = 'Deer Video';
  res.locals.err = {message: '', errors: {}};
  res.locals.error = '';
  res.locals.pager = {pages:[]};
  res.locals.defaultImg = '/images/default.png';

  next();
});




app.use('/', routes);
app.use('/users', users);

//global information



// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;
